from flask_wtf import FlaskForm
from wtforms import StringField,PasswordField,BooleanField,SubmitField
from wtforms.validators import DataRequired, ValidationError, Email, EqualTo
from app.modules import User

class LoginForm(FlaskForm):
    username = StringField('Username1',validators=[DataRequired()])#SubmitField('Username1',validators=[DataRequired()])
    password = PasswordField('Password1',validators=[DataRequired()])
    remember_me = BooleanField('Remember Me')
    submit=SubmitField('Sign In')
class RegistrationForm(FlaskForm):
    username=StringField('Username', validators=[DataRequired()])
    email=StringField('Email', validators=[DataRequired(), Email()])
    password=PasswordField('Password', validators=[DataRequired()])
    password2=PasswordField('Repeat Password', validators=[DataRequired(), EqualTo('password')])
    submit=SubmitField('Register')

    #以下username 必须跟以上定义的username 一样
    def validate_username(self,username):
        user=User.query.filter_by(username=username.data).first()
        if user is not None:
            raise ValidationError('Please use a different username')

    # 以下email 必须跟以上定义的email 一样
    def validate_email(self,email):
        user=User.query.filter_by(email=email.data).first()
        if user is not None:
            raise ValidationError('Please use a different email address')
        pass

